Circular saw and tooth construction



f wQn. GUINDON CIRCULAR sAw AND Too'rn cos'rnuc'rloa Filed Dec. 1:6. 1927 Y l Inventor FVW//a/W a/m/f Patented Apr. 9, 1929.

train WILLIAM DILLED Gurnnon, or-MrnvALn, naw JERSEY.'

CRCUJAR SAW AND-TOOTH CONSTRUCTIQN.

Application filed December 16,1927. `Sera1 No. 240,536.

My invention relates to improvements in circular saw and tooth constructions, where in the circular saw is particularly adapted to receive detachable teeth of novel construction.

rlhe purpose of mv invention is to provide a new and useful circular saw,wherein the saine is so constructed as to receive detachable tooth members, of novel construction, andr adapted for the purpose as more specifi# cally set out in the drawings, and specification. e

The main object of my improved saw is to provide 'a detachable tooth especially useful in cutting rough timber into boards.

Another object resides in the 'particular means by which my improved tooth is secured to the saw body. c

Still another robject resides in the general construction of the tooth member, whereby the material being cut will not have its cut edge left ragged, after the same has been sawed.

@ther very novel objects andV advantages will become apparent as my device is better understood from the specification and claims ,to follow.

In the drawings:

Figure 1 is a fragmentary view of the side portion of my improved saw and tooth con# struction. l

Fig. 2 is afragrnentary portion of the saw, the same being in perspective elevation, so as to disclose the cut-out portion thereof in lwhich my improved tooth carrying plate is secured. V

Fig. 3 is an end view of my improved tooth, looking in the direction of the double prong cutting tooth, and

Fig. `4 is a sectional view taken substan tially on the line 4 4 of F ig. 1.

Now for a more detailed description of my invention, I refer to the drawings, in which like numerals designate like parts. The circular saw 1, included in my improved construction, is formed with the cut out portion 2. The forward edge portion of the cut isinclined downwardly at 3, and of angular shape in cross section. At .the lower end of the edge 3 is an inwardly cut recess 4. The edges of this inwardly cut Vrecess 4 is also angular in cross section, as is the inclined edge 8.

The bottom edge 5 is inclined slightly upwardly to a point 6, this edge portion also being substantially angular in cross section.

pposite from the inclined edge 3, is a sub-- s'tantially shorter inwardly inclined edge portion 7 of similar cross section extending inwardly from the peripheryof the circular saw toy a point 8.

Between the points 6 and 8 respectively, a

Y substantially semi-circular cut out portion 9 is formed, said semi-circular edge having the groove l0 therein. The improved tooth construction, consists of a plate 11 constructed at the upper forward portion thereof with a slightly rearwardly curved tooth member 12.

The upper endportion of this tooth 12 is hifurcated substantially in alinement with the peripheryof the circular saw 1, so as to provide a'pair of cutter prongs 13 and 14 re spectively.

The end portions of these prongs are flared slightly outwardly for the purpose more fully explained hereinafter. The inner edge of the tooth member 12 is substantially circular in eXtent'to a point 15. The upper rear portion of the plates 11 is arcuate in shape to provide a tapering cleaner memloer 16. At the lower forward portion of the plate, a lug` 17 is formed. The semi-circular cut-out portion 1,8 is formed in the plate at the lowerl rearward portion thereof. v

The plate 11 is adaptedto befitted in the cut-out portion 2 of the circular saw body 1, and so much of the plate 11 as is inserted inwardly beyondthe periphery of the Saw, allowing for the .projection ofthe tooth menr ber 12, and the cleaner 1.6, is formed in edge portion with a substantially V-shap'ed groove-way 19.

As is clearly shown'in Fig. 1 of the drawing by dotted line indications, the substantially angular edge portion of the cut-out part of the saw, is adapted to engage into the V-shaped groove-way in the loweredges Iof the plate 11. The lug member 17 is adapted to seat in the recess 4 of the cut-out portion of the fork. The semi-circular recess 18 of the plate 11, is adapted to register with the semi-circular cut-out portion of the circular saw body,-so as to'provide a substantially circular opening to receive the locking ring 20.

When the tooth plate 11 has been properly inserted in the cut-out portion of the saw, so that the lug 17 is seated in the recess 4, the

. locking ring 20 is inserted in the circular opening formed by the respective semi-circular cut-out portions ofthe saw body and tooth plate. rlhe locking ring consists of a single'strand of preferably stiff wire, of a imei, the tieredk point ot the vsulticieritly springy nature. VThe tree Aend portions of the ring; are bent inwardly lo s moed relation to each other in the marmer clearly shown in Fig'. 1 of the drawing.

. The inwardly herltfree ends 21 are adept-- fed to he cons'tricted togreduce the .circumferplate 11 is snugly locked in association with Y the circuler saw body. 'lfhe protruding por-v tions Vofthe platesrieiriely, the tooth iiien'llier 12 and the cleaner member 16 are edeptedin the cutting mildrcut cleaning operation oit sewing. f

As is clearly shown in Fie.' 3 of the drewuttervpro Os 13 and lll respectively, areV o'li substantially wider extent than 'the' width of the cleaner member 16. rlhe purpose of this variance riseswhen in the operation ot cutting,` meterial, the cutter prongs 13 and 11i respectively, will cotto :t greater width than will ollow 'for the lateral engegeroehtoi the cleaner 16.

ln this manner, 'he cleaner member will not snag' or in any other wey regi-edge the' out mede hyft'he proi'ipgs N13 and '14 ri-xspecfy Y tively.

the forward edeeportion o'lieech'of seid cutout portions being formed withv aoi'nwzirdly extending reoess,-the,rearward edge of these `seid out-out portions, the edges ot seid plates `with :i recess et their'.reeriiferd e eridroea-hs engegeehle 'within (seid. r

wherein the sew'i's formed with e pocketV which. is longitudinally Hoving thus 'descrihediriy invention, what cut-out portions'being formed with a further recess, e plete edepted'to he disposed'withiii l being engegeehlewith the yadjacent edges-ol the sew, it projection et,V tlieforwerd ed'gotoifY siiidplote, seid projections adopted y gageihent within the. recess :it the forward edge oftheout, seid plates being ooch Lformed regisT try with the rearward recess ci die sew, e. toothV corstructioir et the top ot seid pleitos,

ing' openings, wher the plete will be soir ly secured within the clit-out portierl of the saw, seid :mee-hs consisting'of :i sr, 'of 1 free ends of said ring heinghent in idly, in spaced parallel relationl to each other, whereby the circumference of seid ring rosyV he reduced by compressing seid ede 1" 2. ln a' tooth etteehiug moons edge portion, the edge'portion et Aseid being formed with :in indenture, the Y,

Ljrooved, e plete -proi vided with tooth-'cohstructifm thereon, sv portion of seid Aplate heine; ed Qtedator disposition within seid pocket7 szwdplete-heing formed with eri ihdciitifire, the Vedge portion of seid vindentiire 'heir' g longitudinally grooved, the plete heine; adopted 'toenggegre within the ypocket so thet-the indeiitures Vwill be in registry, a. split ring;` for et( `Vmeot within the. registering; indentureV toi seoir- L'75 ing;` 'theplziterto' the sew, he "ehd' "oo, .o s Y oi' seid ring beingdisposed inwardly oit seid' ring* md in spaced perellelismwto eachother,

so that by compressing the seid ihwerdi /dis- 

